usr/src/head/malloc.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
  24  */
  25 /*      Copyright (c) 1988 AT&T */
  26 /*        All Rights Reserved   */
  27
  28 #ifndef _MALLOC_H
  29 #define _MALLOC_H
  30
  31 #include <sys/types.h>
  32
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 /*
  38  *      Constants defining mallopt operations
  39  */
  40 #define M_MXFAST        1       /* set size of blocks to be fast */
  41 #define M_NLBLKS        2       /* set number of block in a holding block */
  42 #define M_GRAIN         3       /* set number of sizes mapped to one, for */
  43                                 /* small blocks */
  44 #define M_KEEP          4       /* retain contents of block after a free */
  45                                 /* until another allocation */
  46 /*
  47  *      structure filled by
  48  */
  49 struct mallinfo  {
  50         unsigned long arena;    /* total space in arena */
  51         unsigned long ordblks;  /* number of ordinary blocks */
  52         unsigned long smblks;   /* number of small blocks */
  53         unsigned long hblks;    /* number of holding blocks */
  54         unsigned long hblkhd;   /* space in holding block headers */
  55         unsigned long usmblks;  /* space in small blocks in use */
  56         unsigned long fsmblks;  /* space in free small blocks */
  57         unsigned long uordblks; /* space in ordinary blocks in use */
  58         unsigned long fordblks; /* space in free ordinary blocks */
  59         unsigned long keepcost; /* cost of enabling keep option */
  60 };
  61
  62 #if (!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX)) || \
  63         defined(_XPG3)
  64 #if __cplusplus >= 199711L
  65 namespace std {
  66 #endif
  67
  68 void *malloc(size_t);
  69 void free(void *);
  70 void *realloc(void *, size_t);
  71 void *calloc(size_t, size_t);
  72
  73 #if __cplusplus >= 199711L
  74 } /* end of namespace std */
  75
  76 using std::malloc;
  77 using std::free;
  78 using std::realloc;
  79 using std::calloc;
  80 #endif /* __cplusplus >= 199711L */
  81 #endif /* (!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX)) || ... */
  82
  83 int mallopt(int, int);
  84 struct mallinfo mallinfo(void);
  85
  86 #ifdef  __cplusplus
  87 }
  88 #endif
  89
  90 #endif  /* _MALLOC_H */